113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
|
|
* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
|
|
*/
|
|
#ifndef _ASM_POWERPC_HW_IRQ_H
|
|
#define _ASM_POWERPC_HW_IRQ_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/errno.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/processor.h>
|
|
|
|
extern void timer_interrupt(struct pt_regs *);
|
|
|
|
#ifdef CONFIG_PPC_ISERIES
|
|
|
|
extern unsigned long local_get_flags(void);
|
|
extern unsigned long local_irq_disable(void);
|
|
extern void local_irq_restore(unsigned long);
|
|
|
|
#define local_irq_enable() local_irq_restore(1)
|
|
#define local_save_flags(flags) ((flags) = local_get_flags())
|
|
#define local_irq_save(flags) ((flags) = local_irq_disable())
|
|
|
|
#define irqs_disabled() (local_get_flags() == 0)
|
|
|
|
#else
|
|
|
|
#if defined(CONFIG_BOOKE)
|
|
#define SET_MSR_EE(x) mtmsr(x)
|
|
#define local_irq_restore(flags) __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory")
|
|
#elif defined(__powerpc64__)
|
|
#define SET_MSR_EE(x) __mtmsrd(x, 1)
|
|
#define local_irq_restore(flags) do { \
|
|
__asm__ __volatile__("": : :"memory"); \
|
|
__mtmsrd((flags), 1); \
|
|
} while(0)
|
|
#else
|
|
#define SET_MSR_EE(x) mtmsr(x)
|
|
#define local_irq_restore(flags) mtmsr(flags)
|
|
#endif
|
|
|
|
static inline void local_irq_disable(void)
|
|
{
|
|
#ifdef CONFIG_BOOKE
|
|
__asm__ __volatile__("wrteei 0": : :"memory");
|
|
#else
|
|
unsigned long msr;
|
|
__asm__ __volatile__("": : :"memory");
|
|
msr = mfmsr();
|
|
SET_MSR_EE(msr & ~MSR_EE);
|
|
#endif
|
|
}
|
|
|
|
static inline void local_irq_enable(void)
|
|
{
|
|
#ifdef CONFIG_BOOKE
|
|
__asm__ __volatile__("wrteei 1": : :"memory");
|
|
#else
|
|
unsigned long msr;
|
|
__asm__ __volatile__("": : :"memory");
|
|
msr = mfmsr();
|
|
SET_MSR_EE(msr | MSR_EE);
|
|
#endif
|
|
}
|
|
|
|
static inline void local_irq_save_ptr(unsigned long *flags)
|
|
{
|
|
unsigned long msr;
|
|
msr = mfmsr();
|
|
*flags = msr;
|
|
#ifdef CONFIG_BOOKE
|
|
__asm__ __volatile__("wrteei 0": : :"memory");
|
|
#else
|
|
SET_MSR_EE(msr & ~MSR_EE);
|
|
#endif
|
|
__asm__ __volatile__("": : :"memory");
|
|
}
|
|
|
|
#define local_save_flags(flags) ((flags) = mfmsr())
|
|
#define local_irq_save(flags) local_irq_save_ptr(&flags)
|
|
#define irqs_disabled() ((mfmsr() & MSR_EE) == 0)
|
|
|
|
#endif /* CONFIG_PPC_ISERIES */
|
|
|
|
#define mask_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->chip && desc->chip->disable) \
|
|
desc->chip->disable(irq); \
|
|
})
|
|
#define unmask_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->chip && desc->chip->enable) \
|
|
desc->chip->enable(irq); \
|
|
})
|
|
#define ack_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->chip && desc->chip->ack) \
|
|
desc->chip->ack(irq); \
|
|
})
|
|
|
|
/*
|
|
* interrupt-retrigger: should we handle this via lost interrupts and IPIs
|
|
* or should we not care like we do now ? --BenH.
|
|
*/
|
|
struct hw_interrupt_type;
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_HW_IRQ_H */
|